Radeon Pro W6800X vs GeForce GTX 660 Rev. 2
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | not rated | 121 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 7.00 |
| Power efficiency | no data | 15.27 |
| Architecture | Kepler (2012−2018) | RDNA 2.0 (2020−2025) |
| GPU code name | GK104 | Navi 21 |
| Market segment | Desktop | Workstation |
| Release date | 13 September 2014 (11 years ago) | 3 August 2021 (4 years ago) |
| Launch price (MSRP) | no data | $2,799 |
Cost-effectiveness evaluation
The higher the ratio, the better. We use the manufacturer's recommended prices.
Performance to price scatter graph
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 960 | 3840 |
| Core clock speed | 980 MHz | 1800 MHz |
| Boost clock speed | 1032 MHz | 2087 MHz |
| Number of transistors | 3,540 million | 26,800 million |
| Manufacturing process technology | 28 nm | 7 nm |
| Power consumption (TDP) | 140 Watt | 200 Watt |
| Texture fill rate | 82.56 | 500.9 |
| Floating-point processing power | 1.981 TFLOPS | 16.03 TFLOPS |
| ROPs | 24 | 96 |
| TMUs | 80 | 240 |
| Ray Tracing Cores | no data | 60 |
| L0 Cache | no data | 960 KB |
| L1 Cache | 80 KB | 768 KB |
| L2 Cache | 384 KB | 4 MB |
| L3 Cache | no data | 128 MB |
Form factor & compatibility
Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
| Interface | PCIe 3.0 x16 | Apple MPX |
| Length | 241 mm | 267 mm |
| Width | 2-slot | Quad-slot |
| Supplementary power connectors | 1x 6-pin | Apple MPX |
VRAM capacity and type
Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.
| Memory type | GDDR5 | GDDR6 |
| Maximum RAM amount | 2 GB | 32 GB |
| Memory bus width | 192 Bit | 256 Bit |
| Memory clock speed | 1502 MHz | 2000 MHz |
| Memory bandwidth | 144.2 GB/s | 512.0 GB/s |
| Resizable BAR | - | + |
Connectivity and outputs
This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.
| Display Connectors | 2x DVI, 1x HDMI, 1x DisplayPort | 1x HDMI 2.1, 4x Thunderbolt |
| HDMI | + | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 12 Ultimate (12_2) |
| Shader Model | 5.1 | 6.7 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.1 |
| Vulkan | 1.1.126 | 1.3 |
| CUDA | 3.0 | - |
Pros & cons summary
| Recency | 13 September 2014 | 3 August 2021 |
| Maximum RAM amount | 2 GB | 32 GB |
| Chip lithography | 28 nm | 7 nm |
| Power consumption (TDP) | 140 Watt | 200 Watt |
GTX 660 Rev. 2 has 42.9% lower power consumption.
Pro W6800X, on the other hand, has an age advantage of 6 years, a 1500% higher maximum VRAM amount, and a 300% more advanced lithography process.
We couldn't decide between GeForce GTX 660 Rev. 2 and Radeon Pro W6800X. We've got no test results to judge.
Be aware that GeForce GTX 660 Rev. 2 is a desktop graphics card while Radeon Pro W6800X is a workstation one.
Other comparisons
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